Does the flu shot have mercury in it?

Flu vaccines in multi-dose vials contain thimerosal to safeguard against contamination of the vial. Most single-dose vials and pre-filled syringes of flu shot and the nasal spray flu vaccine do not contain a preservative because they are intended to be used once. read more

The flu shot is the most dangerous vaccine in the U.S. even without the added mercury, and the U.S. government pays out millions of dollars in injuries and deaths due to the flu shot every year. There is also very little evidence that the flu shot is beneficial in preventing the flu, and plenty of evidence that it can make it worse. read more

Single dose-shots of the flu vaccine and the flu vaccine nasal sprays do not contain any mercury compounds. The multi-dose flu shot does contain a preservative called thimerosal, which breaks down into 49% ethylmercury and used to prevent bacterial contamination of the vaccine container. read more